Methyl 5-amino-1,1a,2,7b-tetrahydrocyclopropa[c]chromene-4-carboxylate → Methyl (1aRS,7bSR)-5-[2-(1-ethylpiperidin-4-ylmethyl)-4-fluorobenzenesulfonylamino]-1,1a,2,7b-tetrahydrocyclopropa[c]chromene-4-carboxylate

HRID 928044Notes

Reaction equation

HRID 928044 reaction equation
[CH2:1]([N:3]1[CH2:8][CH2:7][CH:6]([CH2:9][C:10]2[CH:15]=[C:14]([F:16])[CH:13]=[CH:12][C:11]=2[S:17](Cl)(=[O:19])=[O:18])[CH2:5][CH2:4]1)[CH3:2].[NH2:21][C:22]1[C:31]([C:32]([O:34][CH3:35])=[O:33])=[C:30]2[C:25]([CH:26]3[CH2:36][CH:27]3[CH2:28][O:29]2)=[CH:24][CH:23]=1>C(Cl)Cl.N1C=CC=CC=1>[CH2:1]([N:3]1[CH2:8][CH2:7][CH:6]([CH2:9][C:10]2[CH:15]=[C:14]([F:16])[CH:13]=[CH:12][C:11]=2[S:17]([NH:21][C:22]2[C:31]([C:32]([O:34][CH3:35])=[O:33])=[C:30]3[C:25]([CH:26]4[CH2:36][CH:27]4[CH2:28][O:29]3)=[CH:24][CH:23]=2)(=[O:19])=[O:18])[CH2:5][CH2:4]1)[CH3:2]

Participants

5

Reactant 2

HCID 86713293Methyl 5-amino-1,1a,2,7b-tetrahydrocyclopropa[c]chromene-4-carboxylate2×HCID 867133532-(1-Ethylpiperidin-4-ylmethyl)-4-fluorobenzenesulfonyl chloride2×

Product 1

HCID 86713265Methyl (1aRS,7bSR)-5-[2-(1-ethylpiperidin-4-ylmethyl)-4-fluorobenzenesulfonylamino]-1,1a,2,7b-tetrahydrocyclopropa[c]chromene-4-carboxylateYield 77.1%

Reagents, catalysts & solvents 2

HCID 1049PyridineSolventHCID 6344DichloromethaneSolvent

Procedure

2-(1-Ethylpiperidine-4-ylmethyl)-4-fluorobenzenesulfonyl chloride (Intermediate 178, 0.165 g) was added to a solution of methyl (1aRS,7bSR)-5-amino-1,1a,2,7b-tetrahydrocyclopropa-[c]chromene-4-carboxylate (Intermediate 42, 0.290 g) in DCM (5 mL) and pyridine (1 mL) and the resultant mixture was stirred at room temperature for 21 hours. The mixture was evaporated to dryness and the residue was purified by chromatography on silica eluting with a mixture of 2M NH3 in methanol and DCM with a gradient of 0-20% to give methyl (1aRS,7bSR)-5-[2-(1-ethyl-piperidin-4-ylmethyl)-4-fluorobenzenesulfonylamino]-1,1a,2,7b-tetrahydrocyclopropa-[c]chromene-4-carboxylate (0.200 g) as a solid.

Workup

  1. customThe mixture was evaporated to dryness
  2. customthe residue was purified by chromatography on silica eluting with a mixture of 2M NH3 in methanol and DCM with a gradient of 0-20%

Sources & evidence

ORD record
ord-a3dae6ef4e6a481c8142847eec0369ca
Source dataset
uspto-grants-2016_03
Patent number
US09290472B2

Reaction notes

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